Environmentally friendly toner composition
US5534379A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0902
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Toner compositions are formed by selecting a portion of at least one metal-containing pigment or dye and a portion of at least one metal-free pigment or dye, at least one pigment or dye containing a regulated metal and/or material and at least one pigment or dye containing a non-regulated metal and/or material, at least two pigments or dye each containing a different regulated metal and/or material, or pigments or dyes which contain different regulated metals and/or materials in different concentrations to provide required toner properties while maintaining metal, regulated metal and/or regulated material content of a toner composition below a prescribed level, and dispersing the pigments together in the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.